, the number of americans using illegal drugs at the high of the point in almost a decade. we will break down the results. in box three, a police officer moves a dash camera in an attempt to hide a crime. but it seems he was too late to pull off the coverup. we will tell you what is happening and show you more of the video straight ahead in studio b. but first a news alert. police are investigating a murder-suicide in a johns hopkins hospital, hospital room in baltimore. after they say a gunman shot a doctor and triggered a lockdown at the facility. the doctor operated on the suspect's mother. the mother paralyzed as a result the surgery. the gunman shot a doctor, in his stomach. the doctor is expected to be all right. johns hopkins is in baltimore. one of the state's largest private employers ranked as one of the best hospitals in the country. we are expecting a news conference in minute but first we go to the scene where our reporter is. >>reporter: let me have the photographer pan the street. you can see the mayor and the police commissioner and others coming, about do come down and give t
